V0.2.4 Release

-- Changes --

• Added inventory screen UI.
• The player won't pick up an item if they already have the max of that item (hearts, coins, etc.)
• Added fairy rooms.
• Added slime and blade trap enemies.
• Updated graphics for heart and bomb pickups.
• Stairs appear in the boss room after enemies are cleared.
• Player can pick up passive items that will add to their passive item list.
• Treasure rooms now spawn armor.
• Secret & super secret rooms have larger pools of pickups to choose from.
• WASD can be used to move the player around as well.
• Rooms spawn pickups when clearing them.

-- Bug fixes --

• Unlocked and bombed doors now look correct.